LG TV Repair: Common Faults and Solutions.
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Results: 4834
Results: 4834
LG Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| LG | 42LB7DF | Sometimes it turns on but the image stays dark | Power transistor 07n60c3 location q706 check q707 too | Swapping for a 12n50 power mosfet, solved the problem | CELSOKAYRAN |
| LG | CM4320 | On/mute/off | Mi case was zd905 short zener 20v | Rafael da telesateleletronica | |
| LG | 21FU6RL | Arm and disarm wanting to ocstil | R515 is or r516 open on secondary | Replace and run for the hug | Bynho teck |
| LG | CM4430 | Tsound was no sound after 2 minutes it turned off and the message displayed on the display: s-protection | 20v zene diode zd905 shorted | Reginaldo Alves | |
| LG | 50PA4500 | Negative image | Open resistor na and its 2r2 | Resistor de 330r smd na y | rogerio_federal |
| LG | CM4420 | Works normally but no sound comes out | Pvdd 0volt diode zd904 altered | Replaceo zd904 problem solved. | samuel leite |
| LG | 42SL80YD | Only the backlight on with no sound and no image | Reflow processor | Menegat eletrônica | |
| LG | 26LG30R | Stopped, when turning on the LED lights up blue and nothing | 1.2v low supply - regulator on the bottom of the IC 1103 board. | Remove d1103 and put a jump in its place, just run for the hug | VICTORINO |
| LG | 32LH20R | Turn it on then turn it off, only the sound remains | Inverter board | HP ELETRONICA | |
| LG | 50PA4500 | When pressing power the TV turns on and then turns off without generating an image | Transistor q601 burned - thermistor th101 burned | Replace the two | Deivid Vanzuita |
| LG | 47LG60FR | No video signal; antenna, cable, etc... the screen lights up normally (with sprinkles). when injecting signal, it turns off immediately. | One of the probable and quite common causes are the electrolytic capacitors c1105, c1109, c1110, c1118, c1128 and c1141 (100mf/16v) c1133 and c833 (10mf/16v). all on the signal board. | Replace them without measuring. good luck. | <small>This email address is being protected from spambots. You need JavaScript enabled to view it.</small> |
| LG | 21FU1RL CW81A | Vertical closed | R- 301 open 18k | Replacement | lucinaldo |
| LG | RAD 114 | Doesn't start | Only led on | José Adilson augusta | |
| LG | 47LE5500 | TV turns on, hangs on the LG home screen and doesn't come out of it. | Lock | The BGA processor was resoldered as it will show cold soldering between the BGA terminals in its operation over time. remove the TV board remove the heatsink apply flux under the bga terminals and with a thermal blower at a temperature of 280 to 300 degrees heat until the solder enters its liquid state, being careful not to displace the bga. Once done, wait for the board to cool down and assemble | Adriano Miranda |
| LG | 29FE8RL CW62C | Relay arms and disarms but does not turn on the TV, LED is off. Tsound is only voltage on the primary | Defect ic 802 photo coupler | Ok | JOCIMARIO |
| LG | 32LD650 42LD650 42LW5700 47LV5500 | Normal power supplys.does not turn on, with LED flashing slowly or with colored outlines in the image or with thick lines in the image.metallic microprocessor with loose pins.remove heatsink.protect parts around the micro with adhesive aluminum tape.with thermal blower at 300 degrees , heat the computer for exactly 90 seconds. After it cools down, replace the heatsink. | With this procedure and due to the high cost of the new board, it was possible to recover several boards with perfect functioning. | gesuino | |
| LG | RP 14CB 20A | Washed screen, very clear and matte image, normal audio. | Sparking in the tube socket. | Socket replace, focus adjustment. | Geraldo de Petrópolis |
| LG | 42LS5700 | Turns off intermittently | Damaged LED on the bus | LED replacement | Diego Boeira |
| LG | CM8350 | Turns on, but no audio output | Pfc voltage was low. cause: leaky pnp transistor ktn2907as (zh). | Just replace it and the problem will be solved. component position: q910 | (FELIPE) PRO PC Eletrônica e Informática |
| LG | 14FK3BR | Vertical closed at the bottom and stretched at the top like the image is folded at the bottom | R=305- 12k changed measuring 29k | Replaced and solved the problem | Antonio Carlos (Eletrônica Renascer)Boa Vista do Gurupi-MA |